233. Выполните вычитание: з) -3\frac{7}{12} - 2\frac{5}{8};

з) -3\frac{7}{12} - 2\frac{5}{8} = -\frac{3*12 + 7}{12} - \frac{2*8 + 5}{8} = -\frac{43}{12} - \frac{21}{8} = -\frac{43*2}{12*2} - \frac{21*3}{8*3} = -\frac{86}{24} - \frac{63}{24} = \frac{-86 - 63}{24} = -\frac{149}{24} = -6\frac{5}{24}